Pepperl+Fuchs HiD2872 Manual de usuario

ISO9001

Functional Safety

Solenoid Driver

HiD2872, HiC2873(Y1),

HiD2876, HiC2877

PROCESS AUTOMATION

MANUAL

With regard to the supply of products, the current issue of the following document is applicable:

The General Terms of Delivery for Products and Services of the Electrical Industry, published by the

Central Association of the Electrical Industry (Zentralverband Elektrotechnik und Elektroindustrie (ZVEI) e.V.)

in its most recent version as well as the supplementary clause: "Expanded reservation of proprietorship"

Functional Safety HiD2872, HiC2873(Y1), HiD2876, HiC2877

Content

2019-07

1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.1 Content of this Document. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.2 Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

1.3 Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2 Product Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.1 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.2 Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.3 Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

2.4 Standards and Directives for Functional Safety . . . . . . . . . . . . . . . . . . 9

3 Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.1 System Structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.2 Assumptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3.3 Safety Function and Safe State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

3.4 Characteristic Safety Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

3.5 Useful Lifetime . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

4 Mounting and Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.1 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

5.1 Proof Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

6 Maintenance and Repair . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

7 List of Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

2019-07

Functional Safety HiD2872, HiC2873(Y1), HiD2876, HiC2877

Introduction

1 Introduction

1.1 Content of this Document

This document contains information for usage of the device in functional safety-related

applications. You need this information to use your product throughout the applicable stages

of the product life cycle. These can include the following:

• Product identification

• Delivery, transport, and storage

• Mounting and installation

• Commissioning and operation

• Maintenance and repair

• Troubleshooting

• Dismounting

• Disposal

The documentation consists of the following parts:

• Present document

• Instruction manual

• Manual

• Datasheet

Additionally, the following parts may belong to the documentation, if applicable:

• EU-type examination certificate

• EU declaration of conformity

• Attestation of conformity

• Certificates

• Control drawings

• FMEDA report

• Assessment report

• Additional documents

For more information about Pepperl+Fuchs products with functional safety,

see www.pepperl-fuchs.com/sil.

Note!

This document does not substitute the instruction manual.

Note!

For full information on the product, refer to the instruction manual and further documentation

on the Internet at www.pepperl-fuchs.com.

Functional Safety HiD2872, HiC2873(Y1), HiD2876, HiC2877

Introduction

2019-07

1.2 Safety Information

Target Group, Personnel

Responsibility for planning, assembly, commissioning, operation, maintenance,

and dismounting lies with the plant operator.

Only appropriately trained and qualified personnel may carry out mounting, installation,

commissioning, operation, maintenance, and dismounting of the product.

The personnel must have read and understood the instruction manual and the

further documentation.

Intended Use

The device is only approved for appropriate and intended use. Ignoring these instructions

will void any warranty and absolve the manufacturer from any liability.

The device is developed, manufactured and tested according to the relevant safety standards.

Use the device only

• for the application described

• with specified environmental conditions

• with devices that are suitable for this safety application

Improper Use

Protection of the personnel and the plant is not ensured if the device is not used according

to its intended use.

2019-07

Functional Safety HiD2872, HiC2873(Y1), HiD2876, HiC2877

Introduction

1.3 Symbols Used

This document contains symbols for the identification of warning messages

and of informative messages.

Warning Messages

You will find warning messages, whenever dangers may arise from your actions.

It is mandatory that you observe these warning messages for your personal safety and in order

to avoid property damage.

Depending on the risk level, the warning messages are displayed in descending order

as follows:

Informative Symbols

Action

This symbol indicates a paragraph with instructions. You are prompted to perform an action

or a sequence of actions.

Danger!

This symbol indicates an imminent danger.

Non-observance will result in personal injury or death.

Warning!

This symbol indicates a possible fault or danger.

Non-observance may cause personal injury or serious property damage.

Caution!

This symbol indicates a possible fault.

Non-observance could interrupt the device and any connected systems and plants,

or result in their complete failure.

Note!

This symbol brings important information to your attention.

Functional Safety HiD2872, HiC2873(Y1), HiD2876, HiC2877

Product Description

2019-07

2 Product Description

2.1 Function

General

This isolated barrier is used for intrinsic safety applications.

The device supplies power to solenoids, LEDs and audible alarms located in

a hazardous area.

The output signal has a resistive characteristic. As a result the output voltage and current

are dependent on the load.

Line fault detection of the field circuit is indicated by a red LED and an output on the fault bus.

HiD2872

This device is a 2-channel device.

The device is loop powered or bus powered.

It is controlled with a loop powered control signal, switch contact, transistor, or logic signal.

At full load, 12 V at 40 mA (with 55 mA current limit) is available for the hazardous

area application.

An alternative low current output is available for driving a single LED without installing

an external current limiting resistor.

This device mounts on a HiD Termination Board.

HiC2873

This device is a 1-channel device.

The device is loop powered or bus powered.

It is controlled with a loop powered control signal, switch contact, transistor, or logic signal.

At full load, 12 V at 40 mA (with 55 mA current limit) is available for the hazardous

area application.

This device mounts on a HiC termination board.

2019-07

Functional Safety HiD2872, HiC2873(Y1), HiD2876, HiC2877

Product Description

HiC2873Y1

This device is a 1-channel device.

The device is bus powered.

The device is controlled with a switch contact, transistor, or logic signal.

At full load, 12 V at 40 mA (with 55 mA current limit) is available for the hazardous

area application.

This device mounts on a HiC termination board.

HiD2876

This device is a 2-channel device.

The device is loop powered or bus powered.

It is controlled with a loop powered control signal, switch contact, transistor, or logic signal.

At full load, 11.2 V at 40 mA (with 55 mA current limit) is available for the hazardous

area application.

An alternative low current output is available for driving a single LED without installing

an external current limiting resistor.

This device mounts on a HiD Termination Board.

HiC2877

This device is a 1-channel device.

The device is loop powered or bus powered.

It is controlled with a loop powered control signal, switch contact, transistor, or logic signal.

At full load, 11.2 V at 40 mA (with 55 mA current limit) is available for the hazardous

area application.

This device mounts on a HiC termination board.

Functional Safety HiD2872, HiC2873(Y1), HiD2876, HiC2877

Product Description

2019-07

2.2 Interfaces

The device has the following interfaces.

• Safety relevant interfaces:

• HiC2873(Y1), HiC2877: input I, output I

• HiD2872, HiD2876: input I, input II, output I, output II

• Non-safety relevant interfaces: power supply, fault output

2.3 Marking

2.4 Standards and Directives for Functional Safety

Device-specific standards and directives

System-specific standards and directives

Note!

For corresponding connections see datasheet.

Pepperl+Fuchs GmbH

Lilienthalstraße 200, 68307 Mannheim, Germany

Internet: www.pepperl-fuchs.com

HiD2872

HiC2873

HiD2876

HiC2877

Up to SIL 2 (bus powered)

Up to SIL 3 (loop powered)

HiC2873Y1 Up to SIL 2 (bus powered)

Functional safety IEC/EN 61508, part 2, edition 2010:

Functional safety of electrical/electronic/programmable

electronic safety-related systems (manufacturer)

Functional safety IEC/EN 61511, part 1 –3, edition 2003:

Functional safety – Safety instrumented systems for the

process industry sector (user)

2019-07

Functional Safety HiD2872, HiC2873(Y1), HiD2876, HiC2877

Planning

3 Planning

3.1 System Structure

3.1.1 Low Demand Mode of Operation

If there are two control loops, one for the standard operation and another one for

the functional safety, then usually the demand rate for the safety loop is assumed to be

less than once per year.

The relevant safety parameters to be verified are:

• the PFDavg value (average Probability of dangerous Failure on Demand) and the T1

value (proof test interval that has a direct impact on the PFDavg value)

• the SFF value (Safe Failure Fraction)

• the HFT architecture (Hardware Fault Tolerance)

3.1.2 High Demand or Continuous Mode of Operation

If there is only one safety loop, which combines the standard operation and safety-related

operation, then usually the demand rate for this safety loop is assumed to be higher than

once per year.

The relevant safety parameters to be verified are:

• the PFH value (Probability of dangerous Failure per Hour)

• Fault reaction time of the safety system

• the SFF value (Safe Failure Fraction)

• the HFT architecture (Hardware Fault Tolerance)

3.1.3 Safe Failure Fraction

The safe failure fraction describes the ratio of all safe failures and dangerous detected failures

to the total failure rate.

SFF = (s + dd) / (s + dd + du)

A safe failure fraction as defined in IEC/EN 61508 is only relevant for elements or (sub)systems

in a complete safety loop. The device under consideration is always part of a safety loop

but is not regarded as a complete element or subsystem.

For calculating the SIL of a safety loop it is necessary to evaluate the safe failure fraction

of elements, subsystems and the complete system, but not of a single device.

Nevertheless the SFF of the device is given in this document for reference.

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